<p class="p0">A new species of Microthyrium from Yunnan, China 

Abstract

A new species, Microthyrium propagulensis, collected in Yunnan Province, southwestern China is introduced. The species is typical of Microthyriaceae (Microthyriales) in having superficial thyriothecia with a poorly developed basal layer and a prominent darker central ostiole, bitunicate asci and 1-septate ascospores. It is similar to the generic type, M. microscopicum, but differs in having relatively small ascospores, with two apical cilia, which lie downloads from the ascospore apex at a 45° angle. Phylogenetic analysis based on combined LSU and SSU gene sequence data clearly place this species in Microthyrium, but distinguishes it from Microthyrium microscopicum. This second sequence from a Microthyrium species indicates that the putative sequence of the type of this genus is CBS has been correctly named and supports the distinctiveness of Microthyriales and Microthyriaceae.

Figure 3 from: Li X, Wu H-X, Li J, Chen H, Wang W (2020) The insights into the evolutionary history of Translucidithyrium: based on a newly-discovered species. MycoKeys 76: 1-16. https://doi.org/10.3897/mycokeys.76.58628

“…and delivered to the laboratory for observation. According to Wu et al (2014), the collected samples were processed and examined by microscopes: the photos of ascomata were taken by using a compound stereomicroscope (KEYENCE CORPORATION V.1.10 with camera VH-Z20R). Hand sections were made under a stereomicroscope (OLYMPUS SZ61) and mounted in water and blue cotton and photomicrographs of fungal structures were taken with a compound microscope (Nikon ECLIPSE 80i).…”

Molecular phylogeny of Colletotrichum (Sordariomycetes: Glomerellaceae) inferred from multiple gene sequences

“…Statistical support for each node was evaluated by bootstrap analysis (Felsenstein, 1985). Parsimony analyses were conducted in the PAUP 4.0b software (Swofford, 2001) using heuristic search algorithm (Hillis et al, 1996) with 1000 replicates of random-addition-sequence (Wu et al, 2011(Wu et al, , 2014. The resulting trees were rooted using outgroup taxon.…”

Phylogenetic Analyses of New Aquatic Hyphomycetes Provide Molecular Evidence for <em>Microthyriaceae</em> (<em>Dothideomycetes, Ascomycota</em>) Anamorph

“…Asthton et al [3] estimated that there were 54 genera and 278 species in the family. In a subsequent series of papers, Wu et al [2,[5][6][7][8] revised Microthyriaceae by examining the generic type species, and restricted Microthyriaceae to the species with morphological characteristics similar to Microthyrium Desm.. Based on morphological characteristics, 11 genera and about 230 species were proposed [9], but in a subsequent outline of Ascomycota, only 9 genera were listed in this family [10].…”